An attractive young woman witnesses a murder, but her married boss dissuades her from going to the Police in fear that it will uncover their affair. Hooker must try and persuade the frightened girl to help them and testify against the psychotic killer, but the murderer intends to see that she never makes it that far...

After a fatal drink-driving crash, Hooker and Romano set out to track down the gang who are making liquor robberies and then selling it to local youths. But Romano has a personal concern in the case when he finds out that the gifted son of a deceased friend from his time serving in Vietnam has fallen into the disreputable company of the gang...

Hooker and Romano are just finishing working on a case with Lt. Paul McGuire, a close friend and colleague of Hooker's, when they respond to a reported rape - in which the victim turns out to be none other than McGuire's own daughter. The girl is certain that she knows the attacker and can identify him, but the attacker, a lawyer, uses legal loopholes to get off without charge. As Hooker tries to nail the attacker ""by the book"", McGuire becomes infuriated at the lack of action taken and takes matters into his own hands, endangering not only his job, but Hooker's case that will bring the attacker to justice in the proper way...

The hunt for a serial arsonist that is torching condemned buildings intensifies when a Private Investigator, who is an ex-cop and an old friend of Hooker's, is murdered. Certain that the man was on the verge of finding out who is behind the attacks, Hooker and Romano work with his daughter, who is also a PI, to bring the arsonist to justice...

Hooker holds himself personally to blame when a female rookie cop that he trained is seriously wounded in a confrontation with a pair of fleeing gun-shop robbers. With the officer needing her leg amputated as a result of the wound, Hooker and Romano, with help from Stacy and Corrigan, investigate the gun thieves, who are selling their hauls to a back-street crime baron...

Hooker, still haunted by the murder of his former partner five years previously, is determined to catch an unapprehendable band of bank robbers whose leader matches the description and tactics used by the his partner's killer...

Responding to a shooting at a cock-fight in China Town, Hooker thinks he catches a glimpse of a face from the past in the crowd. As he investigates the illegal dealing of automatic weapons in the area, the face turns out to be the daughter of a woman who he was once in love with, but had to cut off their relationship after her husband, presumed dead, had turned up alive. But now, the man is involved with the gun dealing, and sees that he has an old score to settle with Hooker...

A diamond thief and his partner trick a young boy and abduct him, in an act to spite and distress the boy's mother, who is the man's former wife. Hooker follows the trail to Mexico, where an eccentric local detective helps him to track down the thief and the missing boy...

When a pimp who has escaped charge on a technicality is shot dead, Hooker and Romano are on the alert for a vigilante group. But when a prostitute who witnessed the killing tells them that the killers were cops, it becomes apparent that two officers from an adjoining Police precinct are taking the law into their own hands...

Despite being undercover dressed as Santa Claus, Hooker is finding it hard to get into the Yuletide cheer faced with his first Christmas away from Fran and the children; Stacy too, is low on Christmas spirit, after splitting up with her boyfriend. The Christmas blues set in even deeper when a drug stakeout doesn't go to plan, allowing the main target to get away. Later, after Stacy witnesses an armed hold-up by a man and woman connected with the wanted dealer, the woman is forced to abandon her young baby at a local church. As they try and get a lead on the offenders, Stacy looks after the young baby, but Hooker, Corrigan and Romano become concerned that she may be coming to attached to it too want to give it back...

Hooker, Romano, Stacy and Corrigan are involved in an undercover operation to nail a large cocaine dealing ring, when a highly respected fellow officer is killed, execution-style, by the ring, who are on to him. Tracking down one of the thugs involved, Romano is badly injured by a gun-shot wound, before Hooker captures the goon, who gives the lead of a crooked bail-bondsman who is involved with the dealing. Against the wishes of a DEA, Hooker and Corrigan go undercover as drug dealers, with Stacy posing as one of their carriers, to infiltrate the dangerous ring via the bail-bondsman and catch them in the act...

In pursuit of a trio of diamond thieves, who escape via helicopter, Hooker is devastated when he accidentally shoots a 9-year-old boy, leaving the youngster critical in hospital. Meanwhile, Corrigan is concerned when his steady girlfriend Jill starts acting strangely before abruptly breaking off their relationship. The girl is actually being blackmailed by the trio of robbers; and when her body is found washed up from the ocean, Stacy goes undercover at the aerobics gym where Jill worked to try and get a lead, endangering herself in doing so...

Romano is working undercover as a male stripper at a night-club where the owner is a suspect in a cocaine smuggling ring, when he witnesses his contact being shot dead. The dead girl had an incriminating photo of a key drug importer, but it is stolen by a small time criminal who wants to use it to blackmail his way into the drug operation. Before her death, the girl had sent the negative of the incriminating photo to her sister, a deaf mute; but she is attacked by the same man who stole the photograph from her sister, and has the negative snatched from her. Hooker and Romano investigate the tug-of-war over the incriminating negative as they try and identify the heads of the drug operation and put them out of business...

Hooker and Romano are involved in a new neighborhood peace programme designed to reduce tension in an area where two Hispanic gangs are close to declaring all out-war on each other. But the whole programme and peace on the streets is jeopardised when the president of one of the gangs is gunned down in a drive-by shooting. Although the assailants are identified to be wearing the dress code of the victim's rival gang, Hooker suspects that someone else is fuelling the feud to benefit from the sale of fire-arms sold to both sides of the conflict, and must work fast to find the culprits before all-out war erupts between the two gangs...

Following an execution-style murder connected to a drug racket, Hooker joins forces with ex-partner and personal friend Jim Cody to solve the killing and put the drug ring out of business. But as they investigate the case, it becomes apparent that Cody's own daughter is a heroin addict and involved with key members of the drug ring...

Hooker and Romano are on patrol when their car is hit with a chemical based fire-bomb, which leaves Romano blinded. With Romano in hospital and facing permanent loss of sight, his girlfriend Maggie, a fellow Officer, takes his place as Hooker's partner as they investigate who was behind the attack and why. Unbeknown to them, a recently released convict, who's deceased cell-mate was put away by Hooker, has hired a chemical genius to wipe Hooker out, but the attempts on Hooker's life have deadly consequences for Maggie...

Responding to the latest in a string of rape muggings on women using automatic teller machines, Hooker finds that the latest victim is Episcopal female priest Beth Harrison, an old acquaintance. Although terrified, she agrees to testify when Hooker and the team nab the culprit, but the attacker cunningly goes to church to give confession about the rape to her, leaving Beth sticking to her sworn vow of silence over confessions and thus refusing to give testimony. Hooker tries to convince her to go against her beliefs and testify, or else the rapist will be free back on the streets and strike again...

After the third in a series of murders on attractive young blonde women, Stacy goes undercover to work as a salesgirl at a shopping mall store where each of the girls had worked, to act as bait to try and lure out the killer. With Stacy wired up, Hooker, Corrigan and Romano keep tabs on her until the killer makes himself apparent, but Hooker is concerned when the gun used in the murders suggests the killer to be a cop, and all indications point to the store's security officer being the culprit. But the operation puts Stacy in a dangerous position...

The shooting of a masseuse girl in Chinatown convinces Hooker that a Vietnamese crime mob is operating in the area and trying to take over the district's message parlours. With information from a Vietnamese girlfriend of Corrigan's, Romano goes undercover at the parlour in the middle of the trouble as an outcall driver, while Stacy works as one of the massage girls; but when Stacy's cover is roused, Hooker must race to save her...

Dani Starr is an attractive Hollywood Detective who lives alone, dresses snazzily, and always gets the job done. While en route to Hollywood to deliver a captured jewel thief, Hooker and Corrigan are ambushed by the thief's men, who free their leader. Hooker teams up with Dani Starr to find the sprung thief, who is the prime suspect in the murder of a porn film producer. As they search for leads, they find that there is a Mob connection; Hooker learns that Dani's husband was previously murdered by the Mob, and she is determined to find those responsible...